Controlling means for planer-platen-driving mechanisms.



Nd. 847,834. PATEN'IED MAR. 19, 1907. W. I. SEARS, G. E. GREENLEAF & G. T. REISS. V CONTROLLING MEANS FOR PLANER PLATBN DRIVING MECHANISMS.

APPLICATION FILED SEPT. 18, 1906.

2 SHEETS-SHEET 1.

Tye-1 No 847,834. Q PATE NTED MAR. 19, 1907.

I W. T. SEARS, G.. E. GRBENLEAF & G. T. REISS.

CONTROLLING MEANS FOR PLANER PLATEN DRIVING MECHANISMS.

APPLICATION FILED SEPT, 18, 1906.

1 2 SHEETS-SHEET 2.

UNITED srArEs PATENT OFFICE. I

WILLARD 'r. SEARS, OF PHILADELPHIA, PENNSYLVANIA, GEoRGE' I GREENLEAF, OF'PLAINFIELD, NEW JERSEY, AND GEORGET. REISS,

OF HAMILTON, OHIO.

v CIQ'NTFIOLLING MEAN Fon PYLA'NYEB-PLATIEN-DRIVING MECHANISMS.

Specification of Letters Patent.

Patented March 19, 1907 Application filed September 18,1906. Serial No. 835,076.

To all whom it may concern.-

Be it known that we, WILLARD T. SEARS, GEORGE E. GREENLEAF, and GEORGE T. REIss, citizens of the United States, residing, respectively, in Philadelphia, Pennsylvania;

Plainfield, New Jersey, and Hamilton, Ohio,-

have invented certain Improvements in Controlling Means for Planer-Platen-Driving' Mechanism, of which "the following is a speci- IO fic'ation. One object of our invention is to provide ImPIOVGd'COIItI'OlliII means forpneumatic clutch mechanism w ereby the movement of the planer-platen is reversed at the endsof its path of motion, it-being more particularly desired to improve that particular type of controlling mechanism specifically described and claimed in the a plication for patent made by John H. B. ryan, filed June 18,

,190fi, Serial No. 322,184, with a view to avoldlng strain and possible breaking ofva-f rious arts of the machine, on the one hand,

and t e slipping of the clutches and consequent uncertainty of action of the machine, on the other. These objects we attain 'as hereinafter set forth, reference bein had to the accompanying drawings, in'whic Figure 1 is a side. elevation of aplaner, illustrating our' im roved controlling mechanism as applied t ereto. Figs. '2, 3, and 4,

Referrin to. Fi s. I and 6 -of the above drawlngs, is a p 'aner to Which our invention may be applied, B being the platen thereof, and O t e shaft whereby power is transmitted froman electric motor D or other source of power directly to the bull-wheel 0 (shown in dotted lines) for driving the platen.

, The a'rmature-shaftof the motoris connected,

' through gearing of the ordinary type to gear 'wheels (1 and (1, so as to turn these mopposite directions, and a pair of neui'natic-c utches E and E such as thoseiilustrated in a li-. cation for United States 1 patent, filed by il-' liam J Hagman, Serial o. 278,492, are proma be thrown by hand. 1 he throttle-valves H and H, referred-to.-

vided for the pn ose of operatively connect ing either of said gears d a'nd'd to, the shaft 1 Said shaft carries at one end a bevelp'mion d meshing with a bevel-gear c on the shaft C. I

It has hitherto been found that if fiuid at a relatively high pressure beemployed to operate neumatic clutches these would be actuate when the air was admitted with such suddenness and force that breakage of some parts of the machinewas V8187 likely .to occur, while, on the other hand, if uid at relatively low ressure was employed slipping of the 'clutc platen. i

In the Bryan application, above referred to, it is 1'0 osed to rovide means for throt-' Pv E P tling the ex aust from each one of the clutches. at the same time that highressure air is supplied to the other, and while this combination of apparatus marks-a distinct advance in the art we have foun that under operating conditions materiall can be secured if in additl n to throttlin the exhaust the how of high-pressure flui for actuating the clutches is also throttled.

members resulted, with consequent objectionable. uncertainty of action of the improved results In some instances itv may be advisable to throttle the fluid supplied for actuating the clutches either before or after its passage throu'h a distributing-valve and without thrott the exhaust.- For this purpose we may provide a valve of the construction shown in Fi 5 in eachof the ipes g and g',"

connecting t e distributing-Va veGwith the respective clutches E and E, as shown diagrammatically in Fi 2. The distributm valve G may 'be' 0 the well known sli e type, so placed as to have its-valve-rod attached to thev operating-lever. 9, whose arms are extended so as to be.engaged, re-

s ectively, by the well-known adjustable ogsb'and b, carried bythe planer-platen. In addition to such arms the lever is usually provided with a" third arm gfl whereby it as being connected inthe pi es 9 and g are somewhat similar tothe we l-known checkvalve, exec t that the valveproper, h, is

rovided with two adjustable screws h and ii, of which the first is so lacedas to prevent said valve from seating y a predetermined amount, and the second is adjusted so as to permit its enin to a redetermined extent. only. .here ore un er operating conditions with the ap aratus arranged as shown diagrammatica y in Fig. '2 one of the planer-dogs, as b, will, for example, so move the lever 9 that the distributing-valve C connects the pipe 9 to the source of fluidsup 1y in'connection with the ipe g and at t e same time connects the pipe 9 to the exhaust.

High-pressure fluid flowing to the clutch E through the pipe 95 cannot instantly rise to its full pressure inside of said clutch, be- 51.

prevented cause, thou h tending to close, the valve h is om so doing by means of its screw 71/, and consequently the clutch is not actuated with that suddenness and objectionable shock before noted This gradual, though none the less effective, operation is further assisted by the fact that the fluid exhausted through the pipe 9 cannot. pass out freely, but is throttled in flowing throu h the valve H in said pipe, which is held om opening to'its fullest extent by the screw it. The action is the same when the distributing-valve G is so operated as to suplply fluid to the clutch E and permit of ex aust from the clutch E, though it is to be noted that under the conditions found in practice it may be advisable to adjust the two valves H and H differently, since, as is well known, it is desirable that the two clutches operate'somewhat differently.

We have found that beneficial results can be obtained by merely throttling the fluid flowing to the clutches without in an way interfering with the freedom of the ex aust, and it is obvious that such throttlin may be accomplished either as shown in i 3, by means of the adjustable throttle-Va ves H and H placed in the pi es 9 and g, or, as. shown in Fig. 4, it may e accomplished by means of a single throttle-valve H, placed in .the fluid-supply pipe g. With the first of these arrangements the valves H and H are free to open to their full extent to permit of the exhaust of fluid from the clutches, but partially close to an extent determined by the ad ustment of the screw is supplied to operate said clutches, such .ad ustment being, if desired,

different for each clutch.

In the case illustrated in Fig. 4 the single throttle-valve H controls the fluid-sup 1y to both clutches, so that these are su plied gradually and without shock, while t e exhaust, as in the other case,'is unimpeded. V

As-indicated in Fig. 1, each of the pipes g and 9' may be branched and provided with valves 71. and k inthe respective branches.

- In such case, however, the first of these valves would be arranged to throttle the incoming fluid and would completely close'to the exhaust, while the second would throttle the ment of parts, while more complicated than one in which but a single valve H is employed in each of the pipes g and g, is the full equivalent thereof.

We claim as our invention 1. Controlling apparatus for planer-platens consisting of two pneumatic clutches for moving the platen in opposite directions, a sup ly-pipe connected to a source of fluid un er pressure, a pipe leading from each clutch, a distributing-valve for connecting either of the pipes with the supply-pipe or with the exhaust, and means for throttling or retarding the flow of fluid under pressure to the clutches, substantially as described.

2. Controlling apparatus for planer-platens consisting of two pneumatic clutches l' or moving the platen in opposite directions, a supply-pipe connected to a source of fluid under pressure, a pipe leading from each clutch, a distributing-valve for connecting either of said pipes with the supply-pipe or with the exhaust, and throttling means in each of the pipes connecting the distributingvalve with the respective clutches, substantially as described. I

3. Controlling apparatus for planer-platens consisting of two pneumatic clutches for moving the platen in opposite directions, a sup ly-pipe connected toa source of fluid un er pressure, a pipe leading from each clutch, a distributing-valve for connecting either of said pipes with the supply-pipe or with the exhaust, and a valve in each of the pipes connecting the distributing-valve with the respective clutches, said valves be' placed to throttle the fluid flowing to sai clutches, with means for adjusting each of the throttle-valves, substantially as described.

4. Controlling apparatus for planer-platens consisting of two pneumatic clutches for moving the platen in opposite directions, a sup ly-pipe connected to a source of fluid un er pressure, a pipe leading from each clutch, a distributing-valve for connecting either of said pipes with the supply-pi e or with the exhaust, and a valve in each 0 said pipes connectin the distributing-valve with the respective c utches, seal latter valves being constructed to throttle both the fluid flowing to the clutches as well as that flowing from the clutches, substantially as described.

5. Controlling apparatus for planer-platens consisting of two pneumatic clutches for moving the platen in opposite directions, a supiply-pipe connected to a source of fluid un er pressure, a plpe leading from each clutch, a distributmg-valve for connecting either of said pipes with the supply-pi e or with the exhaust, and a valve in each of said pipes connectin the distributing-valve with the respective c utches,'said latter valves being constructed to throttle the fluid flowing to the clutches and to a variable extent that flowing from the clutches, substantially as described.

6. Controlling apparatus for planer-platens consisting of two pneumatic clutches for moving the platen in opposite directions, a sup ly-plpe connected to a source of fluid un er pressure, a pipe leading from each clutch, a distributing-valve for connecting either of said pipes with the supply-pipe or with the exhaust, and a alve in each of the pipes connecting the distributing-valve with the clutches, with adjustable means for each of said Valves for holding it from its seat to any desired extent, and other means for adjusting the amount, of its possible opening, substantially as described.

7. (ontrolling apparatus for planer-platens consisting of two pneumatic clutches for moving said platen in opposite directions, a

supply-pipe connected to a source of fluid um or pressure, a distributing-valve, pipes connecting said valve with the clutches, and

means-in said pi es for throttling fluid flowing therethroug in-either direction, sub- 25 stantially as described. In testimony whereof we have signed'our names to this specification in the presence of the subscribing witnesses.

WILLARD T. SEARS. GEORGE E.- GREENLEAF. GEORGE, T, REISS; Witnesses to the signature of Willard T. Sears: p ARCHIBALD M. OBRIEN, JNO. S. MCDERMOTT. Witnesses to the signature of George E. Greenleaf: I

' GEO. B. WEAN,

FRED E. SUB'ING. ,Witnesses to the signature of George T. Reiss:

J. L. BLAIR, W. H. BRUNAING. 

